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Two capillary tubes of the same length b...

Two capillary tubes of the same length but different radii r and r are fitted in parallel to the bottom of a vessel. The pressure head is P . What should be the radius of a single tube that can replace the two tubes so that the rate of flow is same as before

A

`r_(1) + r_(2)`

B

`r_(1)^(2) + r_(2)^(2)`

C

`r_(1)^(2) + r_(2)^(4)`

D

None of these

Text Solution

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The correct Answer is:
D
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